<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }
    nav {
      margin: 0 auto;
      display: flex;
      width: 1200px;
      background-color: #ccc;
      align-items: center;
    }
    nav ul {
      display: flex;
    }
    nav ul:nth-child(1) {
      margin-right: auto;
    }
    nav ul:nth-child(2) {
      margin-right: 10px;
    }
    nav ul li {
      list-style: none;
      margin-left: 10px;
    }
    nav ul:last-child li {
      width: 50px;
      height: 50px;
      border-radius: 50px;
      background-color: #c7254e;
    }
  </style>
</head>
<body>
<div>
  <nav>
    <ul>
      <li>教程</li>
      <li>教程</li>
      <li>教程</li>
      <li>教程</li>
      <li>教程</li>
    </ul>
    <ul>
      <li></li>
      <li></li>
    </ul>
  </nav>
</div>
</body>
</html>
